Article
Chemistry, Multidisciplinary
Ziwei Chen, Dongxiao Li, Hong Zhou, Tao Liu, Xiaojing Mu
Summary: This paper proposes a pixelated and electric tunable hybrid graphene metamaterial absorber (MA) with a broadband response for molecular fingerprint retrieval. By establishing a one-to-many mapping relationship between spatial and spectral information, a meta-pixel can match multiple characteristic absorption spectra, greatly reducing the number of meta-pixels. The broadband spectral properties of the sensor show potential for multi-fingerprint detection, quantitative detection, chemical identification, and compositional analysis.
Article
Chemistry, Physical
Songyang Guo, Hao Xu, Yiqiang Zheng, Linlin Li, Zhexin Li, Lei Zhang, Huibin Zhang, Xianbao Wang, Jinhua Li, Lili Wang, Liyuan Liu, Zheng Lou
Summary: We propose a stretchable photo-sensing logic gate based on the organic semiconductor DPP-DTT, which can achieve NOR logic gate function with the near infrared (NIR) light as input signal. Compared to conventional logic circuits, this system reduces transistor utilization and introduces NIR light to maximize and simplify the functionality of scalable photo-sensing logic circuits.
Article
Physics, Multidisciplinary
Yu Tian, Zhiwei Chen, Fang-Fang Ren, Qingguo Du, Zhengying Li
Summary: The proposed chiral metamaterial structure achieves high asymmetric polarization conversion efficiency for two orthogonal linearly polarized light in a broadband wavelength range. By adjusting the related structure parameters, the conversion efficiency and bandwidth of the polarization converter can be successfully optimized.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Physical
Reza Dehbashi, Taras Plakhotnik, Timo A. Nieminen
Summary: This paper introduces the use of tuned near-zero-index materials for subwavelength projection for the first time. A novel structure composed of a two-layer slab is proposed for long-distance projection of closely spaced objects with subwavelength separation. By adjusting the relationship between the near-zero-index material and the high-index dielectric slab, clear image projection is achieved.
Article
Optics
Ruijia Xu, Xiaocan Xu, Bo-Ru Yang, Xuchun Gui, Zong Qin, Yu-Sheng Lin
Summary: The integration of MEMS with metamaterial has provided a novel route to achieve programmability, and the use of switchable metamaterial in a MEMS-based metadevice demonstrates multifunctional characteristics, capable of performing logic operations of OR and AND gates simultaneously.
PHOTONICS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Euclides Lourenco Chuma, Thomas Rasmussen
Summary: A novel era of smart sensors is emerging, combining with AI to achieve a better understanding of the world. This article presents a metamaterial-based sensor that performs simultaneous measurements of microwave dielectric spectroscopy and NIR spectroscopy, enhancing the accuracy of substance identification with fewer samples. The proposed sensor achieves 100% accuracy in olive oil adulteration identification with only 14 training samples, requiring 72% fewer samples compared to other techniques.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zhengfeng Guo, Honggang Gu, Yali Yu, Zhongming Wei, Shiyuan Liu
Summary: Optical anisotropy in SnSe is utilized to design broadband and incident-angle-modulation near-infrared polarizers, with high modulation efficiency and no energy consumption. The broadband polarizer has a bandwidth of 324 nm and an average extinction ratio above 23 dB, while the incident-angle-modulation polarizer dynamically and reversibly modulates its working wavelength with a maximum extinction ratio of 71 dB. The proposed design opens up possibilities for mass-production and integration of polarizing optical components based on low-symmetry materials.
Article
Chemistry, Physical
Inyong Hwang, Mingyun Kim, Jaeyeon Yu, Jihye Lee, Jun-Hyuk Choi, Su A. Park, Won Seok Chang, Jongwon Lee, Joo-Yun Jung
Summary: SEIRA spectroscopy utilizes near-field effects in nanostructures for highly sensitive detection, with a 10 nm thick MA achieving a record-high reflection difference SEIRA signal in experiments. MAs can be mass-produced through nanoimprint lithography and dry etching, offering a promising technological pathway for sensing and detection applications.
Article
Materials Science, Multidisciplinary
Damien Terebenec, Niccolo Castellani, Nicolas Bernier, Vitomir Sever, Philippe Kowalczyk, Mathieu Bernard, Marie-Claire Cyrille, Nguyet-Phuong Tran, Francoise Hippert, Pierre Noe
Summary: The study investigates the integration of GeTe/Sb2Te3 superlattices obtained by sputtering into phase-change memory devices, confirming high structural quality through X-ray diffraction and STEM imaging. Statistical analysis shows that the RESET current is lower in SL devices compared to GeTe reference devices, and decreases with increasing Sb2Te3 layer thickness in the SL.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Ahmad Musa, Touhidul Alam, Mohammad Tariqul Islam, Mohammad Lutful Hakim, Hatem Rmili, Ahmed S. S. Alshammari, Md. Shabiul Islam, Mohamed S. S. Soliman
Summary: An oblique angle and polarization insensitive metamaterial absorber (MA) consisting of tungsten resonators on a silicon dioxide substrate, coated with additional SiO2 materials, was investigated. The proposed MA offers an average absorption of 92% from 400 nm to 2400 nm with stable oblique incident angles up to 45 degrees. The structure also achieves polarization insensitivity at the entire visible and near-infrared spectrum, making it highly potential for various optical applications.
Article
Physics, Applied
Jinlai Liu, Bingyi Liu, Jie Song, Yongyuan Jiang
Summary: This paper theoretically studies a broadband optical metamaterial absorber composed of SiC hemisphere array, which achieves a high absorptivity of 93.5% in a wide spectrum range from ultraviolet to near-infrared. The structure exhibits good tolerance to incidence angle up to 40 degrees and shows polarization-independent performance. The broadband absorption mechanism is attributed to the magnetic dipole resonance and lattice resonances.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
E. Ponizovskaya Devine
Summary: In this study, vertically illuminated Si-compatible mid-infrared photodetectors based on graphene forming negative-index metamaterial are presented. The research focuses on a low-loss metamaterial structure with nano/microholes through 2D materials, supporting resonance and enhancing quantum efficiency across a wide range of incident angles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Ziqiang Cai, Yongmin Liu
Summary: This paper demonstrates a near-infrared tunable metasurface by combining graphene with Au nanostructures. The metasurface shows decent modulation efficiency, weak dependence on graphene's carrier mobility, and small gate voltages. The experimental results agree well with numerical simulations, and it is shown that the hybrid graphene metasurface can be tunable in both near-infrared and mid-infrared regions by designing the structural parameters of Au nanostructures properly.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Seungjai Won, Seungman Choi, Taewon Kim, Byunggi Kim, Seung-Woo Kim, Young-Jin Kim
Summary: A novel dynamic UV harmonic beam pattern control is achieved by manipulating the near-infrared wavefront of a femtosecond pulse laser. This technique enables arbitrary wavefront control of UV laser beams for high-precision laser patterning, polarization-sensitive encryption, and 3D holograms.
Article
Optics
Tianrang Wang, Jian Tang, Ming Chen, Jianfeng Xiong, Hexuan Wang, Jie Xu, Shiliang Qu, Yu Cheng, Libo Yuan
Summary: We report a demonstration of an ultrafast all-optical switching with unique light control effects. The switching device effectively controls the transmission and absorption of continuous pulses and short pulses, achieving high output control and modulation bandwidth. This study provides a new structure for ultra-high speed optical data processing components in coherent networks.
Article
Chemistry, Multidisciplinary
Roberto Li Voti, Grigore Leahu, Emilija Petronijevic, Alessandro Belardini, Tiziana Cesca, Carlo Scian, Giovanni Mattei, Concita Sibilia
Summary: This paper presents the photothermal characterization of chiro-optical phenomena in metasurfaces. Specially engineered, nanostructured, periodic materials can enhance the chiro-optical effects when interacting with circularly polarized light.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Bruno Miranda, Rosalba Moretta, Principia Dardano, Ilaria Rea, Carlo Forestiere, Luca De Stefano
Summary: A hybrid plasmonic transducer made of a Poly-(ethylene glycol) diacrylate (PEGDA) hydrogel and citrate gold nanoparticles is able to detect the biotin-streptavidin interaction at picomolar concentrations. The fabrication strategy is large-scale, tunable, and low-cost. The device is highly reproducible and optically stable, and it can be used in dual-optical mode.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Pharmacology & Pharmacy
Rosa Bellavita, Angela Maione, Francesco Merlino, Antonietta Siciliano, Principia Dardano, Luca De Stefano, Stefania Galdiero, Emilia Galdiero, Paolo Grieco, Annarita Falanga
Summary: This study evaluated the antifungal and antibiofilm activities of a panel of cyclic temporin L isoform analogues and demonstrated significant activity for four peptides. Further investigation revealed that peptide 3, which demonstrated both non-toxicity and potent antibiofilm activity, holds promise for biomedical applications.
Article
Chemistry, Physical
Marcello Condorelli, Antonio Speciale, Francesco Cimino, Claudia Muscara, Enza Fazio, Luisa D'Urso, Carmelo Corsaro, Giulia Neri, Angela Maria Mezzasalma, Giuseppe Compagnini, Fortunato Neri, Antonina Saija
Summary: Gold nanoparticles (Au NPs) are highly regarded for their biocompatible nature and extensive biomedical applications. In our research, we investigated the bioproperties of functionalized Au NPs using LCCs for the first time. Results showed that the Au@LCC samples significantly reduced TNF gene expression and induced higher levels of heme oxygenase-1 gene expression compared to the 1:1 dispersion.
Article
Chemistry, Analytical
Hiba Alhalaby, Maria Principe, Haitham Zaraket, Patrizio Vaiano, Anna Aliberti, Giuseppe Quero, Alessio Crescitelli, Valentina Di Meo, Emanuela Esposito, Marco Consales, Andrea Cusano
Summary: This paper presents the design and development of advanced LOF devices for labeled biosensing applications based on fluorescence enhancement. By integrating plasmonic and dielectric materials onto the tip of optical fibers, high-performance biological sensors can be realized, and the overall sensitivity can be further improved through fluorescence enhancement strategies.
Review
Chemistry, Analytical
Valeria Nocerino, Bruno Miranda, Chiara Tramontano, Giovanna Chianese, Principia Dardano, Ilaria Rea, Luca De Stefano
Summary: Recent advances in the fabrication of smart nanomaterials and nanostructured surfaces have found widespread applications in the biomedical field. Nanosensors based on localized surface plasmon resonance offer unprecedented optical features that can reduce costs, analytic times, and the need for expensive lab equipment. Furthermore, they hold promise for the design of nanoplatforms with multiple functionalities and integration with microelectronics and microfluidics. This review summarizes the design strategies, fabrication approaches, and bio-applications of plasmonic nanoparticles arranged in colloids, nanoarrays, and nanocomposites. The main biomedical applications and strengths and limitations of currently available plasmonic nanodevices are highlighted.
Article
Chemistry, Analytical
Valentina Di Meo, Massimo Moccia, Gennaro Sanita, Alessio Crescitelli, Annalisa Lamberti, Vincenzo Galdi, Ivo Rendina, Emanuela Esposito
Summary: In this study, surface-enhanced infrared absorption spectroscopy was used to monitor the denaturation process of a surface-bound protein A monolayer. By comparing the reflectance spectra of different states, changes in the protein's vibration modes can be determined. It was found that hydrogen bond breaking during denaturation caused red-shifts in the principal vibration modes, creating barriers for refolding.
Correction
Chemistry, Physical
Marcello Condorelli, Antonio Speciale, Francesco Cimino, Claudia Muscara, Enza Fazio, Luisa D'Urso, Carmelo Corsaro, Giulia Neri, Angela Maria Mezzasalma, Giuseppe Compagnini, Fortunato Neri, Antonina Saija
Article
Chemistry, Physical
Neal Fairley, Giuseppe Compagnini, Vittorio Scardaci, John Baltrus, Adam Roberts, Anders Barlow, Peter Cumpson, Jonas Baltrusaitis
Summary: This article introduces the commonly used methods and significance of using derivatives in Auger Electron Spectroscopy (AES) and X-ray Photoelectron Spectroscopy (XPS). Differentiation of XPS and AES spectra for polymeric and graphitic materials is presented using numerical methods, including the explanation of the Savitzky-Golay method and two alternative differentiation methods. The importance of characterizing spectral differentiation methods and understanding instrumental characteristics for spectrum measurement is emphasized through a comparison of results for different materials.
SURFACE AND INTERFACE ANALYSIS
(2023)
Article
Optics
Patrizio Vaiano, Giuseppe Quero, Francesco Fienga, Valentina Di Meo, Pierluigi Casolaro, Luigi Campajola, Giovanni Breglio, Alessio Crescitelli, Emanuela Esposito, Antonello Cutolo, Federico Ravotti, Salvatore Buontempo, Marco Consales, Andrea Cusano
Summary: Next generation High Energy Physics (HEP) accelerators require new devices and technologies capable of operating in extreme environments with ultra-high radiation doses. A Lab-On-Fiber (LOF) probe based on a metallo-dielectric nanostructured grating has been developed for real-time dose monitoring. Experimental results show that the LOF resonance wavelength and depth are dependent on the absorbed dose, and the main effect of radiation is the reduction of the PMMA thickness, which affects the resonance behavior.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Carmelo Corsaro, Marcello Condorelli, Antonio Speciale, Francesco Cimino, Giuseppe Forte, Francesco Barreca, Salvatore Spadaro, Claudia Muscara, Manuela D'Arrigo, Giovanni Toscano, Luisa D'Urso, Giuseppe Compagnini, Fortunato Neri, Antonina Saija, Enza Fazio
Summary: The synthesis of contaminant-free silver@linear carbon chains (Ag@LCCs) nanohybrid systems, at different Ag/LCCs ratios, by pulsed laser ablation was investigated. The ablation products were characterized using UV-Vis optical absorption, micro-Raman spectroscopy, and transmission mode scanning electron microscopy. The experimental results were supported by theoretical simulations. Moreover, the bioproperties of the Ag@LCCs nanosystems were studied for wound-healing activity, and it was found that Ag@LCC nanohybrids exhibited good antibacterial properties and had enhanced interaction with mammalian cells, suggesting their potential application in wound healing.
Article
Biotechnology & Applied Microbiology
Nicola Lovecchio, Valentina Di Meo, Andrea Pietrelli
Summary: This work presents a customized measuring system for precise measurements of voltage and current signals generated by microbial fuel cells (MFCs). The system can accurately measure the power output of MFCs with multi-step discharge protocols, and has been calibrated for high precision and low noise measurements. The system is portable and expandable, making it ideal for laboratory use. It can detect and distinguish current signals from different MFCs, allowing for the determination of their output resistance. Overall, this measuring system is a useful tool for characterizing the performance of MFCs and can aid in the development of sustainable energy production technologies.
BIOENGINEERING-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Rayhane Zribi, Angelo Ferlazzo, Enza Fazio, Marcello Condorelli, Luisa D'Urso, Giulia Neri, Carmelo Corsaro, Fortunato Neri, Giuseppe Compagnini, Giovanni Neri
Summary: This study fabricated and characterized a sensor based on silver nanoplates colloidal solutions deposited onto screen-printed carbon electrodes. The sensor showed wavelength-dependent and size-tunable electrochemical sensing response towards hydrogen peroxide (H2O2). The study also demonstrated the potential of using Ag nanoparticles with specific nanoplates morphology for electrochemical redox probes.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
